Route Selection protocol and troubleshooting Summary

Route configuration command-ip route command

Router (config) # ip route <Directory Network or subnet number> [subnet mask] <next vroute ip address | address from the local egress> [management distance 0 ~ 255, 1 by default] Note: static address configuration)

Route configuration command -- ip default-network command

Router (config) # ip default-network <target network number> (Note: use one of the Dynamic Route numbers as the default route configuration in combination with the routing Service)

Router (config) # ip route 0.0.0.0 0.0.0.0 <next vro ip address | address from the local egress> (Note: configuration on the egress vro when there is only one public ip address)

Routing Protocol-internal routing selection Protocol

Use the router and network commands

 
 

  
  
Router (config) # router <routing protocol rip | igrp | ospf | is-is, etc.> [Autonomous System number]
  
  
Router (config-router) # network <network ID of the route protocol used for direct connection>
  
  
Router (config-router) # network <network ID of the route protocol used for direct connection>
 
 

Route Protocol-route information protocol RIP

 
 

  
  
Router (config) # router rip
  
  
Router (config-router) # network <type network numbers that are directly connected to the rip Protocol>
  
  
Router # show ip protocols
  
  
Router # show ip route
  
  
Router # debug ip rip
 
 

Routing Protocol-Internal Gateway Routing Protocol IGRP

 
 

  
  
Router (config) # router igrp <autonomous system number>
  
  
Router (config-router) # network <type network numbers that are directly connected using the igrp protocol>
  
  
Router # show ip interface
  
  
Router # show ip protocols
  
  
Router # show ip route
  
  
Router # debug ip rip
 
 

Route troubleshooting-overall model

 
 

  
  
Router # ping <faulty host | faulty IP address>
  
  
Router # show ip route
  
  
Router # show interface <faulty interface>
  
  
Router # show run
 
 

Route troubleshooting-IP fault troubleshooting

Check available routes

 
 

  
  
Router # show ip route <faulty ip address>
  
  
27.4.4 trace the Route)
  
  
SUN-A> traceroute <faulty host | faulty IP address>
  
  
C: \ windows \> winipcfg
  
  
C: \ windows \> ipconfig
  
  
C: \ windows \> ipconfig/all
  
  
C: \ windows \> tracert <faulty host | faulty IP address>
 
 

Use extended ping to track connectivity

Router # ping

Route troubleshooting-other possible faults

An address parsing ARP fault

 
 

  
  
Router # show arp
  
  
Router # show interface <faulty interface>
  
  
C: \ windows \> arp-
  
  
SUN-A> arp-
 
 

Verify the route table of the Terminal System

 
 

  
  
C: \ windows \> netstat-rn
  
  
C: \ windows \> route-f add 0.0.0.0 mask 0.0.0.0 <gateway address to be added>
  
  
C: \ windows \> route [-f] [[print | add | delete | change] [destination] [mask
  
  
 
  
  
Netmask] [gateway]
  
  
C: \ windows \> route add mask <network mask> <gateway IP address>
  
  
C: \ windows \> route delete mask <network mask> <gateway IP address>
  
  
C: \ windows \> nbtstat <corresponding parameter>
  
  
SUN-A> netstat-rn Router
 
 

Do you understand the troubleshooting of routing faults and the description of routing protocols? These two aspects are both a typical and basic part of the basic knowledge of routing, and hope that readers can master them.